低碳胶凝修补材料的碳化性能研究

Study on Carbonation Performance of Low-carbon Gelation Repair Material

碱激发矿渣水泥在碳减排和实际工程应用方面具有巨大的潜力,但相较于普通硅酸盐水泥,人们对碱激发矿渣水泥各种作用机理的认识还不够透彻,对碱激发矿渣水泥的耐久性评价也存在不足。作为混凝土耐久性的重要因素,碱激发矿渣水泥的碳化过程需要更多的研究。该文通过XRD、FT-IR和TG等方法,对加速碳化(1%CO_(2))和自然碳化(约0.04%CO_(2))的碱激发矿渣水泥样品的碳化产物进行了分析对比,探究了碳化过程。结果证明,通过增加CO_(2)浓度进行快速测试是合理的。

Alkali-activated slag cement(AASC)holds immense potential in carbon emission reduction and practical engineering applications,yet compared to ordinary Portland cement,the understanding of various mechanisms of AASC remains insufficient,and there are deficiencies in evaluating its durability,necessitating the development of more reasonable assessment methods.As a critical factor in concrete durability,the carbonation process of AASC demands further investigation.This paper analyzes and compares the carbonation products of accelerated(1%CO_(2))and natural(approximately 0.04%CO_(2))carbonated AASC samples through methods such as XRD,FT-IR,and TG,exploring the carbonation process.The results demonstrate the rationality of conducting rapid testing by increasing the CO_(2) concentration.